New York Gazette, 28, 51, 53, 66 



New York Historical Society, 33, 39, 66 



New York Mercury, 66 



New York Packet, 29, 51, 53 



Noble, James, 81 



Norwich Courier, 30 



Norwood, R., 10 



Odell, 146 



Ohio Historical Society, 55, 61 



Ohio State Museum, 16, 51, 52, 55, 59, 



60, 61 

 Old Sturbridge, 90, 107, 153 

 optical instruments, 26, 28 

 orrery, 15, 16,39,40,41 

 Osborn, John, 96 

 Paine, Robert Treat, 82 



Thomas, 82, 83 

 Palmer, Brooks, 39, 47, 63, 123 

 Parker, N., 153 

 Parmele, Ebenezer, 67 

 Partridge, Marty, 81 

 Paul, Amos, 129 



Temple, 129 

 Peabody Museum, 85, 96, 97, 139, 153 

 Peale, Charles Wilson, 14 

 Pease, Elizabeth Folger, 45 



Paul, 45, 158, 164, 169 

 Pell, Edward, 84 

 Pemberton, James, 30 

 Pennsylvania Evening Herald, 33 

 Pennsylvania Magazine, 30 

 Pennsylvania Packet, The, 15 

 Pennsylvania, University of, 8, 15, 16 

 perpetual log, 51 

 Phillips, John M., 107 



Jonathan, 99 



Mrs. Mary VV., ix 

 Pierce, Abner, 139 

 Pierpont, John, 68 

 Pitt, William, 24 

 Pitts, James, 86 

 planetarium, 36 

 planisphere, 51 

 Piatt, Adah, 49 



Augustus, 49, 52, 158, 163, 168, 171 



Benjamin, 49, 51, 158, 160, 162, 163, 

 167, 171 



William Augustus, 49 

 Plymouth Journal £5? Massachusetts Ad- 

 vertiser, 112, 113 

 Pope, Joseph, 39, 41, 158, 161, 167 



Potter, John, 43, 158, 161, 171 

 Potts, Thomas, 12 



W. L., 158,163 

 Power, Alexander, 7 

 Price, Derek J. de Solla, ix, 3, 130 

 Priestley, Frances D., 140, 142 



Dr. Joseph, 131, 140, 141, 143 

 Prime, Alfred Coxe, 29, 31, 63 

 Prince, John, 24, 158, 161, 162 



Nathan, 8, 158 

 Princeton University, 15 

 Pryor, Thomas, 59, 159, 164, 168 

 Quincy, Abraham, 96 

 Rathborne, Aaron, 9, 10 

 Ratsey, Widow, 65 

 Revere, Paul, 38, 39, 40, 41, 42, 97, 113, 



116, 117, 159, 161, 168 

 Reynolds, John E., 131, 134 



William, 134 

 Reworth, Captain, 87 

 Rhode Island Historical Society, 45, 



46, 139 

 Riley, Stephen T., ix 

 Ritchie & Co., Bern C, 139 

 Rittenhouse, Benjamin, 11, 15, 16, 142, 



144, 159, 164, 165, 171 

 David, 11, 12, 14, 15, 16, 20, 21, 



47, 62, 142, 144, 145, 146, 147, 

 159, 163, 164, 165, 171 



Rittenhouse & Evans [David Ritten- 

 house & David Evans], 139, 146, 

 148, 159, 171 

 Roberts, Gideon, 67 



Nathaniel, 85 

 Romaine, Lawrence, 88 

 Royal Pennsylvania Gazette, 59 

 Royal Society of London, 58 

 Rutgers University, 26 

 Salter, Titus, 124 

 sand glasses, 59 

 Savage, James, 4, 80, 84 

 Schiff, Henry G., 107 

 Schoen, H. H., 7 

 Seybold, R. F., 7 

 Shampeny, Worth, 153 

 Shepley Library, 139 

 Sheppard, Jack, 29 

 Shillcock, Hannah, 94 



Joyce, 94 



Robert, 93 



182 



